22012445 has 32 divisors (see below), whose sum is σ = 32901120. Its totient is φ = 13766400.

The previous prime is 22012429. The next prime is 22012451. The reversal of 22012445 is 54421022.

It is a happy number.

It is not a de Polignac number, because 22012445 - 2⁴ = 22012429 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45716 + ... + 46194.

It is an arithmetic number, because the mean of its divisors is an integer number (1028160).

Almost surely, 2^22012445 is an apocalyptic number.

It is an amenable number.

22012445 is a deficient number, since it is larger than the sum of its proper divisors (10888675).

22012445 is a wasteful number, since it uses less digits than its factorization.

22012445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 22012445 is about 4691.7422137198. The cubic root of 22012445 is about 280.2567585294.

Adding to 22012445 its reverse (54421022), we get a palindrome (76433467).

The spelling of 22012445 in words is "twenty-two million, twelve thousand, four hundred forty-five".